Abstract
The paper discusses how Explicit Congestion Notification (ECN) can be used to devise a congestion control mechanism for the Internet, which is more rapidly reactive and allows best-effort flows to rapidly adjust to fluctuations in available capacity. Our ECN-mod protocol involves simple modifications to TCP behavior and leverages more aggressive marking-based router feedback.Simulations show that ECN-mod is better than TCP NewReno even for Web-style intermittent traffic sources, and makes the link utilization significantly less sensitive to the variation in the number of active flows. Simulations also show that, while ECN-mod flows obtain a larger portion of the available capacity than conventional best-effort traffic, they do not starve or significantly penalize such TCP-based flows.
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Keywords
- Congestion Control
- Congestion Window
- Link Utilization
- Performance Sensitivity
- Congestion Control Mechanism
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© 2002 Springer-Verlag Berlin Heidelberg
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Misra, A., Ott, T.J. (2002). Performance Sensitivity and Fairness of ECN- Aware ‘Modified TCP’. In: Gregori, E., Conti, M., Campbell, A.T., Omidyar, G., Zukerman, M. (eds) NETWORKING 2002: Networking Technologies, Services, and Protocols; Performance of Computer and Communication Networks; Mobile and Wireless Communications. NETWORKING 2002. Lecture Notes in Computer Science, vol 2345. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-47906-6_50
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DOI: https://doi.org/10.1007/3-540-47906-6_50
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